Commit 97e1185
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feat: SPEC-001 package identity — name is one segment, wire key is the literal (0.0.106) (#280)
* feat: SPEC-001 package identity — name is one segment, wire key is the literal (0.0.106)
0.0.105 fixed #278 by REQUIRING `package.name` to be the fully-qualified
`<namespace>.<name>`. That rule was an encoding constraint dressed up as a
design rule. Its only cause: mcpp threw away the literal `package.name` it had
already read and re-rendered `<ns>.<short>` to address the package, so the two
only matched when the descriptor repeated its namespace inside `name`.
Use the literal instead and the constraint disappears. The canonical form goes
back to what the identity model always said: `namespace` carries the hierarchy,
`name` is a single atomic segment.
Paired with xlings 0.4.69 (openxlings/xlings#381), which keys its index by
(namespace, name) so two packages sharing a short name in ONE index are both
addressable. mcpp's part is sending `<namespace>:<literal name>` rather than a
reconstructed string.
Three subtractions, one addition:
- identity normalization no longer splits on the last dot. It used to infer a
namespace nobody declared — `ns="a"` + `name="a.b.c"` silently became
`(a.b, c)`. Identity is now exactly the two declared fields; a leftover dot
is rejected rather than reinterpreted.
- the install target is the descriptor's literal `package.name`, prefixed with
the package NAMESPACE (xlings' effective namespace), not the index name.
Namespace-less upstream packages keep their bare name.
- the store dir formula `{ns}-x-{name}` is first-class for both spellings
instead of buried among six guesses.
- discovery no longer stops at a fixed candidate-filename list. Recommended
names stay the fast path; when they all miss, mcpp scans by declared
identity. This finally delivers the "filename is not a key" half that
identity-first resolution only ever promised — verification was implemented,
discovery was not.
Compatibility: the legacy fully-qualified spelling is still accepted (the
prefix is stripped before judging), so every published descriptor keeps working
unchanged. A full-registry sweep — 245 descriptors, mcpp indices and
xlings-native ones alike — reports zero form violations. Notably this includes
all 30 descriptors that needed `--allow-split-name` under 0.0.105; that flag is
now obsolete and kept accepted only so 0.0.105-era index CI keeps running.
Adds docs/spec/ for normative documents, with SPEC-001 covering identity,
the four [dependencies] spellings and their candidate ladders, the matching
pipeline, derived-value formulas and worked examples — each rule tagged with
its implementation status.
Verified: 37/37 unit binaries; e2e 161 inverted; new e2e 163 covers short-name
install, legacy FQN install, arbitrary filename discovery, and two same-short-name
packages in one index resolving to alpha-x-widget / beta-x-widget.
Spec: docs/spec/package-identity.md
Plan: .agents/docs/2026-07-25-spec001-implementation-plan.md
* fix(ci): pick the newest mcpp.exe on Windows; gate e2e 163 step 4 on xlings 0.4.69
Two CI failures from PR #280, both real and both worth fixing rather than
working around.
1. Windows e2e ran the PREVIOUS release's binary.
`MCPP_SELF=$(find target -name "mcpp.exe" -path "*/bin/*" | head -1)`
`target/` is restored from cache and keeps one directory per build
fingerprint. A version bump changes the fingerprint, so the freshly built
0.0.106 binary landed next to the cached 0.0.105 one and `head -1` returned
whichever the directory walk hit first — hence `Version mismatch:
mcpp.toml=0.0.106, --version='mcpp 0.0.105'`.
Latent all along; the version bump is just what made two candidates exist.
The Linux workflows already sort by mtime and take the newest — this brings
the five Windows/release sites in line with them.
2. e2e 163 step 4 asserted a capability the sandbox cannot have yet.
That step covers two same-short-name packages in ONE index, which needs
xlings >= 0.4.69 (openxlings/xlings#381). The sandbox xlings comes from
bootstrapping the PREVIOUS mcpp release, so CI runs 0.4.68 until 0.0.106
ships bundling 0.4.69 — a genuine chicken-and-egg, not a defect.
Step 4 now detects the sandbox xlings version and skips with a stated
reason when it is older. Properties 1-3 (short-name install, legacy FQN
install, arbitrary-filename discovery) are what this change is responsible
for and stay asserted unconditionally.
Verified both branches locally by swapping the sandbox xlings: 0.4.69 runs
step 4, 0.4.68 skips it with the reason printed.1 parent cee8130 commit 97e1185
26 files changed
Lines changed: 1618 additions & 268 deletions
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